March 7 » Second Boer War: Boers, led by Koos de la Rey, inflict the biggest defeat upon the British since the beginning of the war, at Tweebosch.
April 20 » Pierre and Marie Curie refine radium chloride.
May 17 » Greek archaeologist Valerios Stais discovers the Antikythera mechanism, an ancient mechanical analog computer.
June 28 » The U.S. Congress passes the Spooner Act, authorizing President Theodore Roosevelt to acquire rights from Colombia for the Panama Canal.
July 17 » Willis Carrier creates the first air conditioner in Buffalo, New York.
Day of death February 15, 1953
The temperature on February 15, 1953 was between -6.8 °C and 0.3 °C and averaged -3.2 °C. There was 1.7 hours of sunshine (17%). The partly clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the north-northeast. Source: KNMI
February 11 » The Soviet Union breaks off diplomatic relations with Israel.
April 29 » The first U.S. experimental 3D television broadcast showed an episode of Space Patrol on Los Angeles ABC affiliate KECA-TV.
May 25 » Nuclear weapons testing: At the Nevada Test Site, the United States conducts its first and only nuclear artillery test.
June 8 » The United States Supreme Court rules in District of Columbia v. John R. Thompson Co. that restaurants in Washington, D.C., cannot refuse to serve black patrons.
July 7 » Ernesto "Che" Guevara sets out on a trip through Bolivia, Peru, Ecuador, Panama, Costa Rica, Nicaragua, Honduras, and El Salvador.
September 13 » Nikita Khrushchev is appointed General Secretary of the Communist Party of the Soviet Union.
When copying data from this family tree, please include a reference to the origin: Joop Klavers, "Family tree Klavers", database, Genealogy Online (https://www.genealogieonline.nl/stamboom_klavers/I140751.php : accessed January 28, 2026), "Hillegien Westebring (± 1876-1953)".
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